300÷(2100+300)
=300÷2400
=12.5%
答:降低了12.5%.
一种空调现价2100元,比原价降低了300元,降低了百分之几?
一种空调现价2100元,比原价降低了300元,降低了百分之几?
数学人气:953 ℃时间:2019-10-29 06:26:56
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